AirHint found the following cheapest return flights from Chicago (MDW) to Sao Paulo (GRU) in March 2026 (see full year).
Return flights
| 07 Mar - 21 Mar | Frontier Airlines | ||
| 19 Mar - 23 Mar | Frontier Airlines | ||
| 08 Mar - 15 Mar | Frontier Airlines | ||
| 12 Mar - 20 Mar | Frontier Airlines | ||
| 02 Mar - 10 Mar | LATAM Airlines Group | ||
| 03 Mar - 15 Mar | Delta |
Also check the deals for one-way flights from Chicago to Sao Paulo in March.
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